Rappelling Researchers Explore Mysterious Siberian Sinkhole

November 15, 2014 12:10 AM

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A group of rappelling researchers explored a mysterious giant sinkhole in northern Siberia's Yamal Peninsula this week, a phenomenon that has puzzled scientists for months, revealing photos that could explain how the massive chasm formed.

Using climbing equipment, scientists from Russian Center of Arctic Exploration plunged 54 feet (10.5 meters) into one of three giant holes, which for unexplained reasons suddenly opened up in July. Eventually they reached the bottom - a region appropriately called the "end of the world."